package test;

/**
 * Created with IntelliJ IDEA.
 * Description:
 * User: 徐海涛
 * Date: 2022-04-26
 * Time: 13:31
 */

class A {

}
class B extends A {

}
class C extends  B{

}
public class Demo3 {
    public static void main(String[] args) {
//        String s1 = "ab" + "bc";
//        String s2 = new String(s1);
//        if(s1.equals(s2)) {
//            System.out.println("sss");
//        }
//        if(s1 == s2) {
//            System.out.println("vbb");
//        }
        System.out.println(1+"10"+3+"2");
    }
}
